Question 1

In a neuromuscular junction,the effect of acetylcholine (ACh) binding to receptors on the motor end plate lasts only briefly due to

Accepted Answer

A)  rapid uptake of the ACh into the myofiber.
B)  endocytosis of the ACh receptor into the myofiber.
C)  rapid destruction of ACh in the synaptic cleft by acetylcholinesterase.
D)  rapid destruction of ACh in the synaptic cleft by monoamine oxidase.
E)  diffusion of the ACh out of the synaptic cleft.

Question 2

Which type of muscle tissue contracts when excited by their own autorhythmic muscle fibers?

Accepted Answer

A)  cardiac muscle
B)  slow twitch oxidative skeletal muscle
C)  multi-unit smooth muscle
D)  fast twitch glycolytic skeletal muscle

Question 3

Contraction of myofibrils within a muscle fiber begins when

Accepted Answer

A)  sodium enters the muscle fiber
B)  acetylcholine binds to ligand gates
C)  calcium is released from the sarcoplasmic reticulum
D)  an action potential travels t-tubules
E)  calcium is moved into the sarcoplasmic reticulum

Question 4

Diltiazem is a calcium channel blocker,reducing free intracellular calcium.What stage of the myogram would be affected immediately?

Accepted Answer

A)  Latent period
B)  Contraction period
C)  Relaxation period
D)  All myogram stages are affected

Question 5

The drug dantrolene inhibits release of calcium into the sarcoplasm.Dantrolene affects the ____ _____.

Accepted Answer

The answer of The drug dantrolene inhibits release of calcium...

Question 6

The opening of ligand gates on the sarcolemma is directly caused by

Accepted Answer

A)  acetylcholine attachment.
B)  calcium influx into the motor neuron .
C)  sodium influx into the muscle fiber.
D)  acetylcholinesterase activity
E)  all choices are correct

Question 7

Match between columns
                        Premises: ___________: Resists fatigue
___________: Uses aerobic and anaerobic
___________: Lowest myoglobin content

Accepted Answer

The Answer of Fast Glycolytic and Fast Oxidative Glycolytic and is...

Question 8

Which term describes a somatic motor neuron and all the skeletal muscle fibers it stimulates?

Accepted Answer

A)  synapse
B)  motor unit
C)  neuromuscular junction
D)  motor end plate

Question 9

Myofibrils contain what type of proteins? Select all that apply.

Accepted Answer

A)  contractile proteins.
B)  regulatory proteins.
C)  structural proteins.
D)  tensile proteins

Question 10

On the diagram,what structure is composed of the three connective tissue layers that extend past the muscle?

Accepted Answer

A)  A
B)  B
C)  E
D)  G
E)  H B

Question 11

List the four steps of the contraction cycle in order of occurrence.What is needed for these steps to continuously repeat?

Accepted Answer

ATP hydrolysis,attachment of m...

Question 12

Match between columns
                        Premises: _________:wraps around groups of muscles
_________:encircles muscle
_________:encircles fascicles
_________:separates muscle fibers

Accepted Answer

The Answer of Endomysium and Epimysium and Fascia and Perimysium is...

Question 13

A brief contraction of all muscle fibers in a motor unit in response to a single action potential moving down the somatic motor neuron is known as

Accepted Answer

A)  unfused tetanus.
B)  fused tetanus
C)  wave summation.
D)  refractory period.
E)  twitch contraction. E

Question 14

Place the muscle tissue type in order from least to most ability to regenerate.

Accepted Answer

A)  smooth,skeletal,cardiac
B)  skeletal,cardiac,smooth
C)  cardiac,smooth,skeletal
D)  skeletal,smooth,cardiac
E)  cardiac,skeletal,smooth

Question 15

Which function do all three muscles perform?

Accepted Answer

A)  moving and storing material throughout the body
B)  generating heat through contractions
C)  stabilizing the movement of joints
D)  promoting movement of body structures

Question 16

When an athlete is preparing to perform a pull up,they hang from the bar.At this point,they are performing what type of contractions?

Accepted Answer

A)  Concentric
B)  Eccentric
C)  Isometric

Question 17

Describe the factors that lead to muscle fatigue.

Accepted Answer

Although the precise mechanisms that cau...

Question 18

In the diagram,calcium ions will rush into this area.

Accepted Answer

A)  B
B)  C
C)  D

Question 19

Why would cardiac muscles have longer refractory periods than skeletal muscles.Choose the best answer?

Accepted Answer

A)  to preserve the normal rhythm of the heart and prevent fatigue
B)  the muscle types contain different contractile proteins
C)  skeletal muscle is autorhythmic
D)  skeletal muscles have prolonged calcium influx
E)  cardiac muscle is not dependent on aerobic respiration to produce ATP

Question 20

Which functions as a motor protein in all three types of muscle tissue?

Accepted Answer

A)  actin
B)  myosin
C)  troponin
D)  titin
E)  tropomyosin B

Exam 10: Muscular Tissue

In a neuromuscular junction,the effect of acetylcholine (ACh) binding to receptors on the motor end plate lasts only briefly due to

Correct Answer
verified

Which type of muscle tissue contracts when excited by their own autorhythmic muscle fibers?

Correct Answer
verified

Contraction of myofibrils within a muscle fiber begins when

Correct Answer
verified

Diltiazem is a calcium channel blocker,reducing free intracellular calcium.What stage of the myogram would be affected immediately?

Correct Answer
verified

The drug dantrolene inhibits release of calcium into the sarcoplasm.Dantrolene affects the _.

Correct Answer
verified

The opening of ligand gates on the sarcolemma is directly caused by

Correct Answer
verified

Choose the correct term based on the feature

Which term describes a somatic motor neuron and all the skeletal muscle fibers it stimulates?

Correct Answer
verified

Myofibrils contain what type of proteins? Select all that apply.

Correct Answer
verified

On the diagram,what structure is composed of the three connective tissue layers that extend past the muscle?

Correct Answer
verified
B

List the four steps of the contraction cycle in order of occurrence.What is needed for these steps to continuously repeat?

Correct Answer
verified
ATP hydrolysis,attachment of m...
View Answer

Match the actions to the terms.

A brief contraction of all muscle fibers in a motor unit in response to a single action potential moving down the somatic motor neuron is known as

Correct Answer
verified
E

Place the muscle tissue type in order from least to most ability to regenerate.

Correct Answer
verified

Which function do all three muscles perform?

Correct Answer
verified

When an athlete is preparing to perform a pull up,they hang from the bar.At this point,they are performing what type of contractions?

Correct Answer
verified

Describe the factors that lead to muscle fatigue.

Correct Answer
verified
Although the precise mechanisms that cau...
View Answer

In the diagram,calcium ions will rush into this area.

Correct Answer
verified

Why would cardiac muscles have longer refractory periods than skeletal muscles.Choose the best answer?

Correct Answer
verified

Which functions as a motor protein in all three types of muscle tissue?

Correct Answer
verified
B

Exam 10: Muscular Tissue

In a neuromuscular junction,the effect of acetylcholine (ACh) binding to receptors on the motor end plate lasts only briefly due to

Correct AnswerverifiedShow Answer

Which type of muscle tissue contracts when excited by their own autorhythmic muscle fibers?

Correct AnswerverifiedShow Answer

Contraction of myofibrils within a muscle fiber begins when

Correct AnswerverifiedShow Answer

Diltiazem is a calcium channel blocker,reducing free intracellular calcium.What stage of the myogram would be affected immediately?

Correct AnswerverifiedShow Answer

The drug dantrolene inhibits release of calcium into the sarcoplasm.Dantrolene affects the ____ _____.

Correct AnswerverifiedShow Answer

The opening of ligand gates on the sarcolemma is directly caused by

Correct AnswerverifiedShow Answer

Choose the correct term based on the feature

Which term describes a somatic motor neuron and all the skeletal muscle fibers it stimulates?

Correct AnswerverifiedShow Answer

Myofibrils contain what type of proteins? Select all that apply.

Correct AnswerverifiedShow Answer

On the diagram,what structure is composed of the three connective tissue layers that extend past the muscle?

Correct AnswerverifiedB

List the four steps of the contraction cycle in order of occurrence.What is needed for these steps to continuously repeat?

Correct AnswerverifiedATP hydrolysis,attachment of m...View AnswerShow Answer

Match the actions to the terms.

A brief contraction of all muscle fibers in a motor unit in response to a single action potential moving down the somatic motor neuron is known as

Correct AnswerverifiedE

Place the muscle tissue type in order from least to most ability to regenerate.

Correct AnswerverifiedShow Answer

Which function do all three muscles perform?

Correct AnswerverifiedShow Answer

When an athlete is preparing to perform a pull up,they hang from the bar.At this point,they are performing what type of contractions?

Correct AnswerverifiedShow Answer

Describe the factors that lead to muscle fatigue.

Correct AnswerverifiedAlthough the precise mechanisms that cau...View AnswerShow Answer

In the diagram,calcium ions will rush into this area.

Correct AnswerverifiedShow Answer

Why would cardiac muscles have longer refractory periods than skeletal muscles.Choose the best answer?

Correct AnswerverifiedShow Answer

Which functions as a motor protein in all three types of muscle tissue?

Correct AnswerverifiedB

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The drug dantrolene inhibits release of calcium into the sarcoplasm.Dantrolene affects the _.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
B

Correct Answer
verified
ATP hydrolysis,attachment of m...
View Answer

Correct Answer
verified
E

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Although the precise mechanisms that cau...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
B